Question

_________ is a modification of ultra filtration in which water is added to the feed as filtration proceeds in order to wash out feed components which will pass through the membranes, basically lactose and minerals.

(a) Permeate

(b) Retentate

(c) Concentration factor

(d) Diafiltration

I got this question during a job interview.

I would like to ask this question from Membrane Filter topic in section Building Blocks of Dairy Processing of Dairy Engineering

Answer 1

The correct answer is (d) Diafiltration

For explanation: Diafiltration is a technique that uses ultra filtration membranes to completely remove, replace, or lower the concentration of salts or solvents from solutions containing proteins, peptides, nucleic acids, and other biomolecules.